Lubricator for winding drums



Dec. 27, 1927. I A. H. SKMER EIT AL.

LUBRICATOR FOR WINDING mums Filed July 13 1.925 2 Shegtsn-Shggt l Dec. 27,5192?.

v A. H. SKAER ET AL LUBRICATOR FOR WINDING DRUMS Filed July 13 1926 2 Sheets-Shut 2 Patented Dec. 27, 1927.

UNITED STATES PATENT OFFICE.

ARTHUR H. SKAER AND EDWIN J. DOWNING, OF DENVER, COLORADO, A."SIGNORS TO THE DENVER ROCK DRLIJ MANUFACTURING COMPANY, OF DENVER, COLORADO, A

CORPORATION OF DELAWARE.

LUBRICATOR FOR WIN DING DRUMS.

Application led July 13, 1926. Serial No. 122,108.

vary greatly and difficulty has been. ex-

perienced in providing a lubricating means that will insure the lubrication of the drum bearing under such varying ten'iperature conditions. The structure disclosed in the ac- 5 companying drawings and hereinafter de scribed has been found to give highly satis factory results under such conditions.

A further and incidental object is to provide means whereby the cable or other article w that wraps upon the drum will also be supplied with lubricant.

In the accompanying drawings: n Figure 1 is a vertical longitudinal sectional view through a known type of double drum u hoist, the drums thereof being equipped with the lubricating` means constituting the sub ject-matter of the present invention.

Figure 2 is a sectional view through the hub portion of one of the drums removed from its mount-ing.

Figure 3 is a sectional view taken substantially on the line 3-3 of Figure 2.

Figure 4 is an end elevation of the hub port-ion of another drum.

In the embodiment disclosed, a suitable supporting structure 5 is provided, in which is iournaled a shaft 6 shown as driven by a worm gearing 7. On this shaft and on op posite sides of the worm gearing are looselyl journaled drums 8. Each drum may be clutched to the shaft, clutching mechanism for one of the drums being shown generally at 9.

Considering each specific drum, it con- 4'5 sists of a shell having a hub portion 10 with fianges 11. The hub portion is chambered, as illustrate-d at 12 and 13, and a sleeve lt is fitted into the drum shell and constitutes a bearing member that rotates on the shaft 6,

5U this shell constituting the inner' walls of the chambers 12 and 13. One of the chambers is considerably larger than the other and constitutes a lubricant container or reservoir. Access is gained to it through an opening closed by a. removable plug 15. rlhe sleeve is provided with an internal longitudinal oil groove 16, terminating short of the outer end of said sleeve and opening through the opposite or inner end. A radial groove 17, cut in the inner end of the drum shell and the sleeve 14, is in communication with the groove 16, as will be clear by reference to Figure 4t. The lubricant chamber 12 is substantially filled with oil absorbing material, such as fe'lt or waste, said material being designated 13. Preferably, however, at the filling port 15 this material is cut away, as shown at 19 in Figure 3 to form a. pocket to receive the oil poured into the chamber, which oil is thus absorbed by the material 18. Furthermore wicks 2O extend through the shell 14, these wicks being preferably e1nbedded in the material 1S and have their inner ends at different points on the interior of the shell 14, so that they will rub against different portions of the shaft 6. One of the wicks, as clearly illustrated in Figure 2, intersects the internal. groove 16.

As heretofore stated, the radial. groove 17 cutin the inner end of the drum. The opposite end of the groove 1G has a port 21 opening into the other chamber 13. This chamber 13 has a further port 22 that opens through the exterior of the drum hub. The outer end of the shell 14 beyond the port 21 is preferably provided with an internal groove 23 containing a ring 2a of felt that serves to prevent the passage of oil along the shaft to the clutch surfaces of the clutch mechanism 9.

It has been found that grease is unsatisfactory for lubricating structures of this character, because it is either too hard in cool temperatures, or becomes too fluid when warmed by the atmosphere and the heat generated in the operation of the structure. The arrangement, disclosed, however, has been found to make oil highly effective as the lubricant, the oil being fed by capillary attraction to the drum bearings, and any eX- cess being delivered outwardly through the passageway formed by the ports 21 and 22 and the chamber 13 so that the cable is oiled. At the same time oil is prevented passing on to the friction surfaces of the clutch mechanism, partly by the stop ring 23 and partly because it has an outlet through the ports 21 and 22.

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art, Without further description and it will be understood that various changes in the size', shape, proportion and minor details of con struction may be resorted to Without departing from the spirit or sacricing any of the advantages of the invention.

What We claim, is: y

1. The combination with a shaft, of a winding drum journaled thereon and having a lubricant holding chamber, means 'for vdelivering lubricant from the chamber to the shaft'and means for directing a portion of the lubricant delivered to the shaft to the exterior of the drum to lubricate the cable Wrapped on the drum.

The combination with a shaft, of a drum from the shaft to the exterior Yof the drum to deliver lubricant from the shaft and drum to the cable Wrapped on the drum.

3. The combination with a shaft, of ay Winding drum j ournaled thereon and having a lubricant holding chamber, and an internal groove, a Wick extending from the chainber to the groove, and a passageway from the internal groove to the exterior of the drum to deliver lubricant :from the groove to the cable wrapped on the drum.

4. The combination with a shaft, of a Winding drum journaled thereon and having an internal lubricant chamber and lubricant absorbinb material in the chamber, said drum having an internal groove, wicks from the chamber to the bore of the drum, one of said Wicks intersecting the groove, said drum having a groove in one end that is in communication with one end of the internal groove, and a passageway from the other end of the internal groove to the exterior of the drum.

In testimony whereof, we affix our signatures.

ARTHUR H. SKAER. EDWIN J. DOVVNING. 

